Naturally occurring microbially-induced smectite-to-illite reaction


Contact
Susann.Henkel [ at ] awi.de

Abstract

The occurrence of microbially induced smectite-to-illite (S-I) reaction has challenged both the notions of solely inorganic chemical control for this reaction and the conventional concept of a semiquantitative illite geothermometer for the reconstruction of the thermal and tectonic histories of sedimentary basins. Here, we present evidence for a naturally occurring microbially induced S-I transition, via biotic reduction of phyllosilicate structural Fe(III), in mudstones buried at the Nankai Trough, offshore Japan (International Ocean Discovery Program Site C0023). Biotic S-I reaction is a consequence of a bacterial survival and growth strategy at diagenetic temperatures up to 80 °C within the Nankai Trough mudstones. These results have considerable implications for petroleum exploration, modification of fault behavior, and the understanding of microbial communities in the deep biosphere.



Item Type
Article
Authors
Divisions
Primary Division
Programs
Primary Topic
Publication Status
Published
Eprint ID
49381
DOI 10.1130/G46122.1

Cite as
Kim, J. , Dong, H. , Yang, K. , Park, H. , Elliott, C. W. , Spivack, A. , Koo, T. h. , Kim, G. , Morono, Y. , Henkel, S. , Inagaki, F. , Zeng, Q. , Hoshino, T. and Heuer, V. B. (2019): Naturally occurring microbially-induced smectite-to-illite reaction , Geology . doi: 10.1130/G46122.1


Share
Add to AnyAdd to TwitterAdd to FacebookAdd to LinkedinAdd to PinterestAdd to Email


Citation

Geographical region

Research Platforms
N/A

Campaigns
N/A


Actions
Edit Item Edit Item